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Thursday, October 16, 2014
Wednesday, October 15, 2014
Toyota Camry engine ignition fault repair
Symptom: a Toyota Camry sedan engine has fire signs, but not up and running.
Troubleshooting: As the electronic control of the engine control system is more complex, but reliability is relatively high, we in principle easier issues first to be checked.
First check whether the normal high-voltage arcing. Unplug the power lines were arcing single cylinder test, found the spark intense, bright, proof ignition system properly.
Then check the intake passage is unobstructed. Remove the air filter, found scania vci 2 above the dust more, with high-pressure air after blowing installed, start the engine, the fault persists.
Then check the oil. The oil pressure gauge connected to the fuel line, start the engine, the fuel pressure measured only 10kMPa (normal is between 230 ~ 250kPa). There is no leakage of pipeline inspection place, turn the ignition switch can hear the sound of the electric fuel pump operation; therefore believe may be due to clogged fuel filter or tubing, causing the hydraulic system can not be established. So replacing the fuel filter, clean lines, and use high-pressure air blowing, but still start after loading vain. Then retest oil is 110kPa, concluded that the electric fuel pump is damaged, can not afford to build pressure. Removed from the fuel tank fuel pump, fuel pump carefully observed a crack at the oil port, estimated fuel leaked from here, back to the tank, the test ran so decisively, the replacement of a new fuel pump, troubleshooting.
Conclusion: EFI engine electronic control system reliability is relatively high, such as computers before traveling over 150,000 km may be faulty, so should do first encounter EFI engine failure foundation inspection, it is difficult to find fault after the first transaction. According to experience, EFI engine failure Piwis Tester II Updated occurred in the oil on the road, because the fuel injection system of high precision, high quality requirements for fuel, so the oil on the road most of the oil-related failures, such as the common fault "electric fuel pump enough oil." and "injector bad" are related to the fuel quality. Of course, this example is rather special, was asked by the driver learned that this car chassis had been scratched stones, may encounter the fuel pump, causing damage, the long-running, gradually severe that the engine will not start.
http://www.uobd2.net/wholesale/digimaster-3-digimaster-iii-digital-odometer-correction-master.html
Troubleshooting: As the electronic control of the engine control system is more complex, but reliability is relatively high, we in principle easier issues first to be checked.
First check whether the normal high-voltage arcing. Unplug the power lines were arcing single cylinder test, found the spark intense, bright, proof ignition system properly.
Then check the intake passage is unobstructed. Remove the air filter, found scania vci 2 above the dust more, with high-pressure air after blowing installed, start the engine, the fault persists.
Then check the oil. The oil pressure gauge connected to the fuel line, start the engine, the fuel pressure measured only 10kMPa (normal is between 230 ~ 250kPa). There is no leakage of pipeline inspection place, turn the ignition switch can hear the sound of the electric fuel pump operation; therefore believe may be due to clogged fuel filter or tubing, causing the hydraulic system can not be established. So replacing the fuel filter, clean lines, and use high-pressure air blowing, but still start after loading vain. Then retest oil is 110kPa, concluded that the electric fuel pump is damaged, can not afford to build pressure. Removed from the fuel tank fuel pump, fuel pump carefully observed a crack at the oil port, estimated fuel leaked from here, back to the tank, the test ran so decisively, the replacement of a new fuel pump, troubleshooting.
Conclusion: EFI engine electronic control system reliability is relatively high, such as computers before traveling over 150,000 km may be faulty, so should do first encounter EFI engine failure foundation inspection, it is difficult to find fault after the first transaction. According to experience, EFI engine failure Piwis Tester II Updated occurred in the oil on the road, because the fuel injection system of high precision, high quality requirements for fuel, so the oil on the road most of the oil-related failures, such as the common fault "electric fuel pump enough oil." and "injector bad" are related to the fuel quality. Of course, this example is rather special, was asked by the driver learned that this car chassis had been scratched stones, may encounter the fuel pump, causing damage, the long-running, gradually severe that the engine will not start.
http://www.uobd2.net/wholesale/digimaster-3-digimaster-iii-digital-odometer-correction-master.html
Tuesday, October 14, 2014
Engine suddenly no longer beat
Timing toothed belt is an important component of the engine must always check whether its in good condition, and in strict accordance with the provisions of the actual use of regular replacement cycles and vehicles (eg replacement cycle Jetta sedan timing gear belt of 60,000 km). Not all of the engine timing gear will cause damage to the valve with a fracture, it is whether the valve of the cylinder toyota intelligent tester 2 occupied by the piston when the working chamber decision. To achieve good power output, some of the engine of the vehicle the distance between the valve and the piston in proximity, so that when the toothed belt is broken once, the piston can easily collide with the valve, resulting in damage to the valve.
Check and replace if being regularly toothed belt, you do not have to worry about breakage and valve gear with the situation appeared to be the top bend.
Generally, premature rupture causes toothed belt are the following.
(1) toothed belt itself because of quality problems with the timing gear is a key component, so a lot of the engine using imported parts, so a higher price, but never cheaper to buy can not guarantee the quality of the toothed belt, or if it will cause breakage big loss.
(2) installation problems with timing gear generally requires the use of special tools, and the operation is more complex. If disassembly is not standardized, it is easy to make the teeth with internal cracks, or the appearance of the upper and lower parts of the tooth with the other flat is not a case of early rupture causing tooth belt.
(3) tensioner or pump damage are generally required when the toothed belt tensioner tensioner and guide through the cooling water pumps are mostly driven by the timing gear belt, tensioner or pump Francais KESS V2 operation if the seizure has not been timely replacement, it will cause severe wear toothed belt, and even sudden rupture.
(4) subject to corrosion of oil and other liquids toothed belt is rubber parts, lubricants and other liquids after contact, can cause corrosion and premature failure.
(5) improper use of vehicles starting or accelerating too fast, timing toothed belt tension due to the sudden emergence of transient elongation, or even rupture. For example, when the vehicle is stuck car, if a fierce slam the accelerator pedal and clutch pedal loose ways to make cars out of the crater, toothed belt may break.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Check and replace if being regularly toothed belt, you do not have to worry about breakage and valve gear with the situation appeared to be the top bend.
Generally, premature rupture causes toothed belt are the following.
(1) toothed belt itself because of quality problems with the timing gear is a key component, so a lot of the engine using imported parts, so a higher price, but never cheaper to buy can not guarantee the quality of the toothed belt, or if it will cause breakage big loss.
(2) installation problems with timing gear generally requires the use of special tools, and the operation is more complex. If disassembly is not standardized, it is easy to make the teeth with internal cracks, or the appearance of the upper and lower parts of the tooth with the other flat is not a case of early rupture causing tooth belt.
(3) tensioner or pump damage are generally required when the toothed belt tensioner tensioner and guide through the cooling water pumps are mostly driven by the timing gear belt, tensioner or pump Francais KESS V2 operation if the seizure has not been timely replacement, it will cause severe wear toothed belt, and even sudden rupture.
(4) subject to corrosion of oil and other liquids toothed belt is rubber parts, lubricants and other liquids after contact, can cause corrosion and premature failure.
(5) improper use of vehicles starting or accelerating too fast, timing toothed belt tension due to the sudden emergence of transient elongation, or even rupture. For example, when the vehicle is stuck car, if a fierce slam the accelerator pedal and clutch pedal loose ways to make cars out of the crater, toothed belt may break.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Monday, October 13, 2014
Chery acceleration engine running sluggish Cause Solution
Symptom: during acceleration, the engine speed may not be a corresponding increase, but dysfunctional, or even stall. The car had cleaned the throttle body, replace the spark plug, the fault persists.
Check Analysis: Taking of fault code display: 1, No. 34, the engine ECU wiring circuit. 2, battery failure. By Circuit that No. 34 is the main ground wire engine ECU, the No. 35 for the engine ECU 12V power inputs, so the preliminary digimaster 3 update view that the existence of the engine ECU power lines bad place. So first check the main ground wire No. 34, No. 35 power supply fuse and the engine ECU main relay, found its contacts can occasionally hear the voice shaking off the engine ECU main relay. Then open the ECU main relay found to have signs of damp, contact ablation. After replacing the main relay test, although improved but still poor acceleration. No fault code retrieval output, and each sensor injector is working properly, but found fault occurs when the fuel pressure is much lower than the standard pressure, it is concluded that the fuel supply system has a problem. Check the fuel filter, oil pressure regulator fuel pump, fuel pump failure found speed fluctuations, indicating that the fuel pump is not working properly, may be due to a problem with the fuel pump itself, it could be the fuel pump circuit failure. First check the fuel pump supply line and found the fuel pump relay output super mb star c3 voltage instability, then unplug the relay and open inspection, found that the coil has been damp, contact ablation.
Troubleshooting: After replacing the fuel pump relay test, the engine is running back to normal.
Review Summary: When PDI customers reflect long ago cleaned the engine, due to the cleaning of the engine and cause the engine ECU main relay and fuel pump relay internal moisture damage, which recommended that owners do not use water to clean the engine.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Check Analysis: Taking of fault code display: 1, No. 34, the engine ECU wiring circuit. 2, battery failure. By Circuit that No. 34 is the main ground wire engine ECU, the No. 35 for the engine ECU 12V power inputs, so the preliminary digimaster 3 update view that the existence of the engine ECU power lines bad place. So first check the main ground wire No. 34, No. 35 power supply fuse and the engine ECU main relay, found its contacts can occasionally hear the voice shaking off the engine ECU main relay. Then open the ECU main relay found to have signs of damp, contact ablation. After replacing the main relay test, although improved but still poor acceleration. No fault code retrieval output, and each sensor injector is working properly, but found fault occurs when the fuel pressure is much lower than the standard pressure, it is concluded that the fuel supply system has a problem. Check the fuel filter, oil pressure regulator fuel pump, fuel pump failure found speed fluctuations, indicating that the fuel pump is not working properly, may be due to a problem with the fuel pump itself, it could be the fuel pump circuit failure. First check the fuel pump supply line and found the fuel pump relay output super mb star c3 voltage instability, then unplug the relay and open inspection, found that the coil has been damp, contact ablation.
Troubleshooting: After replacing the fuel pump relay test, the engine is running back to normal.
Review Summary: When PDI customers reflect long ago cleaned the engine, due to the cleaning of the engine and cause the engine ECU main relay and fuel pump relay internal moisture damage, which recommended that owners do not use water to clean the engine.
http://www.obdnews.com/index.php/benz-diagnostic-tool/
Sunday, October 12, 2014
Polo 1.4L engine flameout normal driving the car does not start
Symptom: a 2003 factory Polo 1.4L sedan, suddenly unable to accelerate normal driving, the engine stalled and then did not start.
Check Analysis: rescue personnel arrived at the scene after starting the engine test, the engine smooth start, but found EPC lights on the dashboard lights. Understand that the car two days ago because of EPC lights, and replace the intake manifold super mb star c3 absolute pressure sensor. Remove the intake manifold absolute pressure sensor inspection also found no sludge and limb things like quality, so the two days before the change over from the old sensor cleaned and loaded on to clear the fault code, after starting the engine light is no longer found in EPC lit, test also everything is normal, then believed to be caused by poor quality of the new pieces of crystal. But after a day and a call to the owner, and air conditioning systems without anti fault code storage. Analysis guide the car and can not reflect accelerated engine flameout can not start the machine again. After the car towed back to the factory connection failure detector test, also show the intake manifold absolute pressure sensor failure, after clearing the fault code test, the engine has returned to normal. PCV valve is sometimes suspected of being a bad job, but because of the crankcase ventilation is not very good split, so decided to carry out regular checks. After inspection, petrol pressure, spark plugs, ignition coils, throttle, vacuum tube so normal. Road test on the car over 0.5h, the fault does not reproduce. The relevant lines and electrical components were checked and found particularly hot pump relay.
To determine the cause of the malfunction, continue to road test the car 5 km, heat pump renault diagnostic tool relay, it seems not the relay itself, check the fuel pump and lines, the line properly, it seems the fuel pump may be a problem, remove the check the fuel pump, filter found below a layer of dirt has been blocked.
The original fuel pump is overworked, causing the pump relay heat, eventually disconnected, when the car cool while the relay is to resume normal work, the car can work properly. Since the fuel system pressure is not enough, resulting in a sudden thinning the mixture, so the engine electronic control unit stores the camp on the intake manifold absolute pressure sensor failure fault code, and lit the EPC lights.
Remedy: Replace the fuel pump.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
Check Analysis: rescue personnel arrived at the scene after starting the engine test, the engine smooth start, but found EPC lights on the dashboard lights. Understand that the car two days ago because of EPC lights, and replace the intake manifold super mb star c3 absolute pressure sensor. Remove the intake manifold absolute pressure sensor inspection also found no sludge and limb things like quality, so the two days before the change over from the old sensor cleaned and loaded on to clear the fault code, after starting the engine light is no longer found in EPC lit, test also everything is normal, then believed to be caused by poor quality of the new pieces of crystal. But after a day and a call to the owner, and air conditioning systems without anti fault code storage. Analysis guide the car and can not reflect accelerated engine flameout can not start the machine again. After the car towed back to the factory connection failure detector test, also show the intake manifold absolute pressure sensor failure, after clearing the fault code test, the engine has returned to normal. PCV valve is sometimes suspected of being a bad job, but because of the crankcase ventilation is not very good split, so decided to carry out regular checks. After inspection, petrol pressure, spark plugs, ignition coils, throttle, vacuum tube so normal. Road test on the car over 0.5h, the fault does not reproduce. The relevant lines and electrical components were checked and found particularly hot pump relay.
To determine the cause of the malfunction, continue to road test the car 5 km, heat pump renault diagnostic tool relay, it seems not the relay itself, check the fuel pump and lines, the line properly, it seems the fuel pump may be a problem, remove the check the fuel pump, filter found below a layer of dirt has been blocked.
The original fuel pump is overworked, causing the pump relay heat, eventually disconnected, when the car cool while the relay is to resume normal work, the car can work properly. Since the fuel system pressure is not enough, resulting in a sudden thinning the mixture, so the engine electronic control unit stores the camp on the intake manifold absolute pressure sensor failure fault code, and lit the EPC lights.
Remedy: Replace the fuel pump.
http://www.obdnews.com/index.php/bmw-diagnostic-tool/
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